Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
trong van » trong cac
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau
vat dung » van dung, viet dung, mat duong
va dung » van dung, va duong, va ung

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - cang thang ((va dung) OR (vat dung)) trong van thanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (chieu xanh)) - cang thang ((va dung) or (vat dung)) trong van thanh cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (chieu xanh)) - cang thang ((va dung) or (vat dung)) trong van thanh cau*.